Transient electromagnetic field of an electric line source above a plane drude model plasmonic half-space

Abstract

The enhancement of the electromagnetic field at the surface of a Drude metal is classified as the so called surface plasmon effect. This surface plasmon effect in a classical Drude model has been investigated extensively in the frequency domain. However, to understand what is actually happening to the electromagnetic field at the near vicinity of a Drude metal a thorough analysis in the space-time domain is needed. Once the space-time domain counterpart of the surface plasmon effect is found, one is able to describe and classify the physical phenomena that are playing a role in the occurrence of this effect.